save project

diy2.py

+username = "python"
+userpassword = "123456"
+i=5
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print("该用户名不存在，请重新输入!")
+            continue
+            print("登陆失败你还有",i,"次机会的已经登录了")
+        if password != userpassword:
+            print("密码错误，请重新输入!")
+            print("登陆失败你还有",i,"次机会的已经登录了")
+    else:
+        print("登陆失败，账户已锁定，请带身份证来我司解锁")
+        exit()
+print("欢迎来到贝尔编程!")
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